arch/m32r/include/asm/dcache_clear.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2001  Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto
   7  * Copyright (C) 2004, 2006  Hirokazu Takata <takata at linux-m32r.org>
   8  */
   9 #ifndef _ASM_M32R_DCACHE_CLEAR_H
  10 #define _ASM_M32R_DCACHE_CLEAR_H
  11
  12 #ifdef CONFIG_CHIP_M32700_TS1
  13 #define DCACHE_CLEAR(reg0, reg1, addr)                          \
  14         "seth   "reg1", #high(dcache_dummy);            \n\t"   \
  15         "or3    "reg1", "reg1", #low(dcache_dummy);     \n\t"   \
  16         "lock   "reg0", @"reg1";                        \n\t"   \
  17         "add3   "reg0", "addr", #0x1000;                \n\t"   \
  18         "ld     "reg0", @"reg0";                        \n\t"   \
  19         "add3   "reg0", "addr", #0x2000;                \n\t"   \
  20         "ld     "reg0", @"reg0";                        \n\t"   \
  21         "unlock "reg0", @"reg1";                        \n\t"
  22         /* FIXME: This workaround code cannot handle kernel modules
  23          * correctly under SMP environment.
  24          */
  25 #else   /* CONFIG_CHIP_M32700_TS1 */
  26 #define DCACHE_CLEAR(reg0, reg1, addr)
  27 #endif  /* CONFIG_CHIP_M32700_TS1 */
  28
  29 #endif /* _ASM_M32R_DCACHE_CLEAR_H */